Pump.



R. S. W AL'KER.

PUMP.

APPLICATION mLnD man f .4 i l;

R. S. WALKER.

PUMP.

APPLlcATIoN FILED Nov. 25. 1912.

Patented June 23, 1914.

2 SHEETS-SHEET 2.

Wx f M RALPH S. WALKER, OF NIAGARA FALLS, NEW YORK.

PUMP.

Application tiled November 25, 1312.

Specification of Letters Patent.

Patented June ,'23, 1914.

Serial No. 733,327.

To all wim/a fit only' .voluta-ria Be it known that l, Ramal b'. humain n citizen of the iinitcd States, residing)r at Niagara Falls. in the county ot Niagarafand' State of New Yorin have invented nc and useful Improvements in Pumpe, of which the following` is a specitication.

Mtv invention relates to pampa.

Une object, of my invention is to provide an improved Construction of pump having,r a rotary piston.

ln connection with such object., another object of the invention is to provide a slid able chamherdividing valve plate operable through movement of the piston.

Still another object of the invention is to provide 'in (':onncction with such a valve plate, Wedge portions on the, piston to act against the valve plate so as to slide or acluate the same. and a further object ot' the invention is to provide means, lo guide said vaiveplate during its sliding; movenient.

The invention resides;v in struction and arrangement and details of 'parte hereinafter described and illustrated 1n drawings acccmpan ving` this` application, which are to be taken a part hereof,

In Saidk drawings the preferred embodiment of the invention is shown, and there in :--V

Figure l in a side elevation: Fig. 2 a vertical centr-ai .sectional View: llie. 5i is a transverse Sectional view on the line 3- of Fig. Q, and; Fig. 4 is a perspective view of the end Wall or plate employed to close the pump cylinder.

Like reference characters designate like or similar parts throughout the several vicvv'a4 of the drawings.

Referringv specifically to the drawings7 the pump cylinder may hc provided in any snitable manner. but as shown consists of a hollow pump cvlinder section generally desigauu'ed l. and con'iprisiim an end vall 2 and a side ciecunii'crcntial wali 3. The other cud all ci' the pump cylinder may he sepanate troni canne; l and in the nature of a plate t which may be attached to thc wall 3 inany auitable manner` as bv mcaus ot bolts, 5 para-ing thcrctlnoug'h and in Screw threaded opening@ in the wail 3.

The lpiston employed.y compriNa. a hcad (i which opel-atea within the holloiv portion of thc cylinder. 'as via obvious. Such pieton head haz-i connected thereto a Shaft/7 which the novel conextends through the wall z and ma)y be cnargcd aiy 8 and mounted in a hearing i ther-cat, provided on thcl cud wall 2. 'l`hc .shaft 7 may be rotated or driven in either direction by suitable lucana so as to thereby drive or rotate the piston head t. 'lhc piston head ti ab ehown, if; provided with inner and outer arcuate walls, and at its ends terminates in wedge shaped portiom l()7 hy reason of the, provision ot' inclined or curved cam walls ll.

Vi'ithin the cylinder is mounted a slidablc valve plate member lf2. which in eti'cct divides the chamber within the cylinder into two equal compartments o1' chambers. Suit. able meantI is provided to guide the plate 12 in its movement and auch meanb` mauiv consist. of the lugs 13 which are formed integral with7 and project inwardly from the cnd plate 4. lt is to be noticed that auch lugs` 123 are diatauced or spaced apart so as to provide a @lot or space in which the patc l2 Slides. ltxiealso to he noted that the iuucr arcuate tall pf the piston h ad t' t`ollows the contour, nl' bears against the periphery of the lugs i3.. The valve plate l2 may he ot any suitable construction, but in connection therewith prefer to provide a plate it which is provided with an elongated lot which receives` a tcnon l?) provided on thc main portion ot the plate l2. Une or more cavities Such as 1G may be provided in thc tcnon 15. and in such cavities are mounted coil Spring 17 which tend to prees the plate t4 into engagement with the inner i'acc of the wall 3. Such yielding connection ot' the plate i4 will take up or reducey the wear of the valve plate to Some extent. .\S stated. the valve plate 12 in effect. divides the ch'amher of the pump c'vlindcr into y separate chambers or compartments. These compartments are each provided with one or more ports to which may lead pipes designated 18.

VIn operation the shaft 7 is driven7 and accordingly the pistcn head ti is driven. 1n its movement. the wedge portions accordingr to thc direction of rotation. wedge in hetwecn thc inner tace of the wall :i and the plate l2. and tlns force or slide thc same in a direction transversely ot thc cylinder.

lt is to he noted that as thc, valve plate glides. that it bearbl against the wall 'l1 oppoitc to that of the wedge portion ctl'cctiiu! the sliding movement ot the valve plate. YIt will thus be seen that practically aty all times, the valve plate bears against both walls 11 of the piston head 6, thereb orming an effective closure between t e two chambers provided on opposite sides of the valve plate 12. It will be obvious that the l'luidyor material to `be umped2 is vpumped in through certain of tiie openings V18 and out through other of the openings. It is to be noted that I have provided an exceedingly simple consruction of pump, one em ploying few parts, and one which may be manufactured at a minimum cost. y As merely the preferred embodiment 0i the invention has been shown, and changes in the details of construction thereof may be resorted to, it is to be understood that such changes are reserved providing they fall within the spirit and scope of the appended claims.

Having thus described my invention, what I claim and desire to secure by Letters Patent is l. ln a pump, stationary cylinder, plate means slidable within said cylinder, a piston rotatable in said cylinder cooperating with said plate means to rovide Within the cylinder a pluralit of e embers, inlet and ontlet mcansfnr tne chambers, said iston engageable with said plate means dining ro tation to slide the p ate means.

2. In a ump, a stationary cylinder, plate means sli able within said cylinder transversel f thereof, a piston rotatable in said cylin er extending partly around the saine coperating with said plate tc :irovide with in the cylinder a plurality of cninnbers, said cylinder having a Wall extending at right angles to the axis of said piston, said wall provided with orts for the chambers, eaid piston engagea le with said plate means during rotation to slide the plate means.

2l. In a pump, a stationary cylinder, plate means slidable within said cylinder, a piston 'rotatable iii said. cylinder coiiperatin with said plate means to provide within t e cylinder a pluralit of chambers, inlet and outlet means for t 1e chambers, said piston extending partly around the cylinder engaging the said plate means at opposite ends to continuously slide the plate means during rotation of the piston.

4. In a pump, a stationary cylinder, plate means slidahle within said cylinder, a pieton ,rotatable in said cylinder coperatino' with said plate means to .provide within tlie cyll index' a pluralit of chambers, inlet and ovatlet means for tlieiehambers, said piston. exi tending partly around the 'cylinder and provided at opposite ends with cani faces, eaid cam faces engaging said plate means at opY` posite ends to continuously slide the plate means during rotation of tne pieten.

5. In a pump, a stationary cylinder, ulate means slidable Within said cylinder, a piston rotatable in cylinder coperatin with. n said plate means to provide within tie cyh inder a pluralt of chambers,'inlet and out' let means for t e chambers, said pieton ex tending partly around the cylinder having inner and outer walls and similar c rn end walls, plate means engaged at opp e enfile by sain' cani walls to contiinicimly slide plate means, said plate means bein? of an extent trans 'ersely of the cylinder die saine as thc distance from the ini. ,rsectinn of one Cain face with the other Wall of the piston and the intersection of the other Patr: face with the irncr wall of the piston.

C. in a pump, a stationary cylinder, pi' tf means slidable within said cviirdt-r. a pis n rotatable in said cylimler roopera'ting aitii sai/.i pitite means to rfwicle within the cyl inder a plurality or chambers, said cylin-r der having an annular wall and side walls, one of said e walls ieing removable :inl a. provided with guidi'- lngrs, pitite slid able between und guided by sald lugs, said piston extending pnrty around the Cylindcr having inner and enter Nelis and similar end cuni walls seid plate means opposite facce by said fin-nn Wallsd (nl-sl; slide the plate moans, said i being of :in ement transwersilj, indcr tin` .same as the di tance tcr-ect10n of one cani fue ffnz in wall of the piston and the intersectivz'; ni the other cam faire ywith the inner Wall of tbc piston, and one ot' said Sid-e walls prria'idoil with ports for the cylinder.

ELPH S. WALKER.

Wam;

THoMAs H. Dn'rcmfn,

Howum S. liiarmm. 

